Depending on the distance between the fan and the case, the fan noise can be
exacerbated by putting the lid on.
To make it worse, on my SB61G2, the fan whine from the ATI 9600 PRO is close
enough to the whine from the CPU cooler fan to "beat". It's damn annoying.
A simple fix is to cut a blowhole over the fan on your gfx card - that'll
decouple the CPU and gfx fans and reduce the case resonance.
>> Stay informed about: vidcard right next to case wall causing increased fan nois..